Geography 1400F/G Lecture : Geography of Population - Distribution, Structure, Dynamics, and Politics

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coppergoat35

30 Jan 2012

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Geography of population distribution, structure, dynamics, and politics. The statistical study of human population is called demography. From the greek demos (populace, people) and graphie (to write about) Population geography is the study of the spatial components of demography (spatial pattern/variation) The 20th century is the century of population explosion . The un says there are now 7 billion people on earth. Around 1950 the population started growing as a massively increased rate. The most striking feature is the overwhelming growth in developing countries while the growth in developed countries has remained relatively stable. Developed nations build their populations mostly through immigrants. World population grows by 200,000 people a day. Some predict that later in the century population will fall dramatically due to differing fertility rates. Nearly half of the world population are urbanites (82% in canada, causes problems because you need many resources)

Related Questions

George Smits owns George's Joint, a gas station and convenience store. George is trying to get a better understanding of his business and wants to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons of gasoline sold follows a normal distribution with a population standard deviation of 2.3 gallons. From these records, he randomly selects 60 sales and finds the mean number of gallons sold is 8.6

What is the point estimate of the population mean?

silverbeaver496

The fish population P(t) in a lake is suddenly attacked by adisease that render the fish unable to reproduce. Assuming that thedeath rate of the fish is inversely proportional to the square rootof the fish population (i.e. k1 = Î²/â(P) where Î² is aconstant), perform the following tasks:

1. Write a differential equation that models the population offish as a function of time. Assume that the fish are infected bythe disease at t = 0 and define your constants.

2. Solve the differential equation with the initial condition thatP(0) = P0.

3. What is the half-life of the fish population?

4. If there were 900 fish initially, and 441 are left after 6weeks, how long does it take for all the fish to die? Assume thatthe disease was caused by radioactive waste dumped in the lake. Itis discovered that another population of fish, S(t), spontaneouslymutate into the original fish at a rate of k2 (per week) and neverdie. The population S(t) are born at a rate k3.

5. Draw a diagram that describes the life cycle of these twofish populations including your rate constants.

6. Write the differential equations describing the populationsof P(t) and S(t).

Express each of the following in scientific notation:

(a) 0.000851 g

(b) 38,041,430 (population of California)

(d) 313,914,040 (U.S. population)

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Geography 1400F/G Lecture : Geography of Population - Distribution, Structure, Dynamics, and Politics

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